How to get vaapidech265 output as opencv BGR mat?

jeyp4 jaiforfriend at
Mon Dec 30 12:33:44 UTC 2019

I tried vaapipostproc for I420 -> BGRx.

It is working. But cost an overhead of 5ms for 720p.

I was wondering that both vaapidecode and vaapih265dec offers
video/x-raw(meta:GstVideoGLTextureUploadMeta) format: { RGBA, BGRA }.

Can I use this option and to get ready-made BGRA data for cv::Mat? If Yes,
then How?

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